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African Harmonised Early-Grade Assessment Data 2008-2022

Africa, 2008 - 2022
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Reference ID
afr-df-ahead-2008-2022-v2
DOI
https://doi.org/10.25828/2287-mw84
Producer(s)
DataFirst
Collections
African Foundational Learning Data
Metadata
Documentation in PDF DDI/XML JSON
Created on
Jul 31, 2026
Last modified
Aug 03, 2026
Page views
92401
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Data file: afr-df-ahead-2008-2022-v2

Variables: 2880

Variables

harm_student_id
Harmonized student ID (Liberia: leading minus = no school ID in microdata)
student_id
Pupil ID from original microdata under a harmonized name
school_id
School ID from original microdata under a harmonized name
school_code
Harmonized school code (000 for Liberia: no school in microdata)
pupil_code
Harmonized pupil code
id_cohort
cohort
Data collection cohort
country_iso
ISO-3166 alpha-2 (project catalogue / study_rounds)
country
Country
project_code
Three-digit project code within country
study_type
Study design type (project catalogue)
study_design
Study design / evaluation type (project catalogue)
round
Data-collection round within project (study_rounds)
year
Calendar year of assessment round
month
Month
wave_status
Panel follow-up status
treatment
Treatment indicator
randomization_level
Randomization unit ID
representation_level
Geographic/population level represented by the assessment sample
age
Age of student
gender
Gender of student
grade
Grade of student
consent
Consent
lang_home
Student home language
lang_home_type
Home language instrument: single (1) vs multi (2) mention
lang_assessment
Language of assessment
lang2_assessment
Second language of assessment
lang_instruction
Language of instruction
lang_instruction_type
Language of instruction instrument: single (1) vs multi (2) mention
we_sub_lang
Language of weekly subtest
lang_home_1
Home language 1
lang_home_2
Home language 2
lang_home_3
Home language 3
lang_home_4
Home language 4
lang_home_5
Home language 5
lang_home_6
Home language 6
lang_instruction_1
Language of instruction 1
lang_instruction_2
Language of instruction 2
lang_instruction_3
Language of instruction 3
location
Location - rural or urban
admin_div1_type
Source column mapped to admin_div1
admin_div1
First administrative division
admin_div2_type
Source column mapped to admin_div2
admin_div2
Second administrative division
admin_div3_type
Source column mapped to admin_div3
admin_div3
Third administrative division
sample_design_stages
Number of stages in sample design
cluster
Cluster
strata
Education district ID
wt_final
final weight
stage1
First stage population sampling unit
strata1
First stage stratification grouping
fpc1
First stage finite population correction
wt1
First stage weight
stage2
Second stage population sampling unit
strata2
Second stage stratificaiton grouping
fpc2
Second stage finite population correction
wt2
Second stage weight
stage3
Third stage population sampling unit
strata3
Third stage stratification grouping
fpc3
Third stage finite population correction
wt3
Third stage weight
stage4
Fourth stage population sampling unit
strata4
Fourth stage stratification grouping
fpc4
Fourth stage finite population correction
wt4
Fourth stage weight
print_orientation_score
Print Orientation - Raw Score
print_orientation_score_pcnt
Print Orientation - Percent Correct
print_orientation_score_zero
Print Orientation - Zero Score Indicator
letter_name_pm
Letter name: Correct items per minute
letter_name_score
Letter name: Raw score
letter_name_time_remain
Letter name: Time remaining
letter_name_time_allowed
Letter name: Time allowed
letter_name_score_pcnt
Letter name: Percent correct
letter_name_attempted
Letter name: Attempted
letter_name_attempted_pcnt
Letter name: Percent correct of attempted
letter_name_score_zero
Letter name: Zero score indicator
letter_name_auto_stop
Letter name: Auto stop indicator
letter_name_1
Letter name: Item 1
letter_name_2
Letter name: Item 2
letter_name_3
Letter name: Item 3
letter_name_4
Letter name: Item 4
letter_name_5
Letter name: Item 5
letter_name_6
Letter name: Item 6
letter_name_7
Letter name: Item 7
letter_name_8
Letter name: Item 8
letter_name_9
Letter name: Item 9
letter_name_10
Letter name: Item 10
letter_name_11
Letter name: Item 11
letter_name_12
Letter name: Item 12
letter_name_13
Letter name: Item 13
letter_name_14
Letter name: Item 14
letter_name_15
Letter name: Item 15
letter_name_16
Letter name: Item 16
letter_name_17
Letter name: Item 17
letter_name_18
Letter name: Item 18
letter_name_19
Letter name: Item 19
letter_name_20
Letter name: Item 20
letter_name_21
Letter name: Item 21
letter_name_22
Letter name: Item 22
letter_name_23
Letter name: Item 23
letter_name_24
Letter name: Item 24
letter_name_25
Letter name: Item 25
letter_name_26
Letter name: Item 26
letter_name_27
Letter name: Item 27
letter_name_28
Letter name: Item 28
letter_name_29
Letter name: Item 29
letter_name_30
Letter name: Item 30
letter_name_31
Letter name: Item 31
letter_name_32
Letter name: Item 32
letter_name_33
Letter name: Item 33
letter_name_34
Letter name: Item 34
letter_name_35
Letter name: Item 35
letter_name_36
Letter name: Item 36
letter_name_37
Letter name: Item 37
letter_name_38
Letter name: Item 38
letter_name_39
Letter name: Item 39
letter_name_40
Letter name: Item 40
letter_name_41
Letter name: Item 41
letter_name_42
Letter name: Item 42
letter_name_43
Letter name: Item 43
letter_name_44
Letter name: Item 44
letter_name_45
Letter name: Item 45
letter_name_46
Letter name: Item 46
letter_name_47
Letter name: Item 47
letter_name_48
Letter name: Item 48
letter_name_49
Letter name: Item 49
letter_name_50
Letter name: Item 50
letter_name_51
Letter name: Item 51
letter_name_52
Letter name: Item 52
letter_name_53
Letter name: Item 53
letter_name_54
Letter name: Item 54
letter_name_55
Letter name: Item 55
letter_name_56
Letter name: Item 56
letter_name_57
Letter name: Item 57
letter_name_58
Letter name: Item 58
letter_name_59
Letter name: Item 59
letter_name_60
Letter name: Item 60
letter_name_61
Letter name: Item 61
letter_name_62
Letter name: Item 62
letter_name_63
Letter name: Item 63
letter_name_64
Letter name: Item 64
letter_name_65
Letter name: Item 65
letter_name_66
Letter name: Item 66
letter_name_67
Letter name: Item 67
letter_name_68
Letter name: Item 68
letter_name_69
Letter name: Item 69
letter_name_70
Letter name: Item 70
letter_name_71
Letter name: Item 71
letter_name_72
Letter name: Item 72
letter_name_73
Letter name: Item 73
letter_name_74
Letter name: Item 74
letter_name_75
Letter name: Item 75
letter_name_76
Letter name: Item 76
letter_name_77
Letter name: Item 77
letter_name_78
Letter name: Item 78
letter_name_79
Letter name: Item 79
letter_name_80
Letter name: Item 80
letter_name_81
Letter name: Item 81
letter_name_82
Letter name: Item 82
letter_name_83
Letter name: Item 83
letter_name_84
Letter name: Item 84
letter_name_85
Letter name: Item 85
letter_name_86
Letter name: Item 86
letter_name_87
Letter name: Item 87
letter_name_88
Letter name: Item 88
letter_name_89
Letter name: Item 89
letter_name_90
Letter name: Item 90
letter_name_91
Letter name: Item 91
letter_name_92
Letter name: Item 92
letter_name_93
Letter name: Item 93
letter_name_94
Letter name: Item 94
letter_name_95
Letter name: Item 95
letter_name_96
Letter name: Item 96
letter_name_97
Letter name: Item 97
letter_name_98
Letter name: Item 98
letter_name_99
Letter name: Item 99
letter_name_100
Letter name: Item 100
l2_letter_name_pm
Letter name (language 2): Correct items per minute
l2_letter_name_score
Letter name (language 2): Raw score
l2_letter_name_time_remain
Letter name (language 2): Time remaining
l2_letter_name_score_pcnt
Letter name (language 2): Percent correct
l2_letter_name_attempted
Letter name (language 2): Attempted
l2_letter_name_attempted_pcnt
Letter name (language 2): Percent correct of attempted
l2_letter_name_score_zero
Letter name (language 2): Zero score indicator
l2_letter_name_auto_stop
Letter name (language 2): Auto stop indicator
l2_letter_name_1
Letter name (language 2): Item 1
l2_letter_name_2
Letter name (language 2): Item 2
l2_letter_name_3
Letter name (language 2): Item 3
l2_letter_name_4
Letter name (language 2): Item 4
l2_letter_name_5
Letter name (language 2): Item 5
l2_letter_name_6
Letter name (language 2): Item 6
l2_letter_name_7
Letter name (language 2): Item 7
l2_letter_name_8
Letter name (language 2): Item 8
l2_letter_name_9
Letter name (language 2): Item 9
l2_letter_name_10
Letter name (language 2): Item 10
l2_letter_name_11
Letter name (language 2): Item 11
l2_letter_name_12
Letter name (language 2): Item 12
l2_letter_name_13
Letter name (language 2): Item 13
l2_letter_name_14
Letter name (language 2): Item 14
l2_letter_name_15
Letter name (language 2): Item 15
l2_letter_name_16
Letter name (language 2): Item 16
l2_letter_name_17
Letter name (language 2): Item 17
l2_letter_name_18
Letter name (language 2): Item 18
l2_letter_name_19
Letter name (language 2): Item 19
l2_letter_name_20
Letter name (language 2): Item 20
l2_letter_name_21
Letter name (language 2): Item 21
l2_letter_name_22
Letter name (language 2): Item 22
l2_letter_name_23
Letter name (language 2): Item 23
l2_letter_name_24
Letter name (language 2): Item 24
l2_letter_name_25
Letter name (language 2): Item 25
l2_letter_name_26
Letter name (language 2): Item 26
l2_letter_name_27
Letter name (language 2): Item 27
l2_letter_name_28
Letter name (language 2): Item 28
l2_letter_name_29
Letter name (language 2): Item 29
l2_letter_name_30
Letter name (language 2): Item 30
l2_letter_name_31
Letter name (language 2): Item 31
l2_letter_name_32
Letter name (language 2): Item 32
l2_letter_name_33
Letter name (language 2): Item 33
l2_letter_name_34
Letter name (language 2): Item 34
l2_letter_name_35
Letter name (language 2): Item 35
l2_letter_name_36
Letter name (language 2): Item 36
l2_letter_name_37
Letter name (language 2): Item 37
l2_letter_name_38
Letter name (language 2): Item 38
l2_letter_name_39
Letter name (language 2): Item 39
l2_letter_name_40
Letter name (language 2): Item 40
l2_letter_name_41
Letter name (language 2): Item 41
l2_letter_name_42
Letter name (language 2): Item 42
l2_letter_name_43
Letter name (language 2): Item 43
l2_letter_name_44
Letter name (language 2): Item 44
l2_letter_name_45
Letter name (language 2): Item 45
l2_letter_name_46
Letter name (language 2): Item 46
l2_letter_name_47
Letter name (language 2): Item 47
l2_letter_name_48
Letter name (language 2): Item 48
l2_letter_name_49
Letter name (language 2): Item 49
l2_letter_name_50
Letter name (language 2): Item 50
l2_letter_name_51
Letter name (language 2): Item 51
l2_letter_name_52
Letter name (language 2): Item 52
l2_letter_name_53
Letter name (language 2): Item 53
l2_letter_name_54
Letter name (language 2): Item 54
l2_letter_name_55
Letter name (language 2): Item 55
l2_letter_name_56
Letter name (language 2): Item 56
l2_letter_name_57
Letter name (language 2): Item 57
l2_letter_name_58
Letter name (language 2): Item 58
l2_letter_name_59
Letter name (language 2): Item 59
l2_letter_name_60
Letter name (language 2): Item 60
l2_letter_name_61
Letter name (language 2): Item 61
l2_letter_name_62
Letter name (language 2): Item 62
l2_letter_name_63
Letter name (language 2): Item 63
l2_letter_name_64
Letter name (language 2): Item 64
l2_letter_name_65
Letter name (language 2): Item 65
l2_letter_name_66
Letter name (language 2): Item 66
l2_letter_name_67
Letter name (language 2): Item 67
l2_letter_name_68
Letter name (language 2): Item 68
l2_letter_name_69
Letter name (language 2): Item 69
l2_letter_name_70
Letter name (language 2): Item 70
l2_letter_name_71
Letter name (language 2): Item 71
l2_letter_name_72
Letter name (language 2): Item 72
l2_letter_name_73
Letter name (language 2): Item 73
l2_letter_name_74
Letter name (language 2): Item 74
l2_letter_name_75
Letter name (language 2): Item 75
l2_letter_name_76
Letter name (language 2): Item 76
l2_letter_name_77
Letter name (language 2): Item 77
l2_letter_name_78
Letter name (language 2): Item 78
l2_letter_name_79
Letter name (language 2): Item 79
l2_letter_name_80
Letter name (language 2): Item 80
l2_letter_name_81
Letter name (language 2): Item 81
l2_letter_name_82
Letter name (language 2): Item 82
l2_letter_name_83
Letter name (language 2): Item 83
l2_letter_name_84
Letter name (language 2): Item 84
l2_letter_name_85
Letter name (language 2): Item 85
l2_letter_name_86
Letter name (language 2): Item 86
l2_letter_name_87
Letter name (language 2): Item 87
l2_letter_name_88
Letter name (language 2): Item 88
l2_letter_name_89
Letter name (language 2): Item 89
l2_letter_name_90
Letter name (language 2): Item 90
l2_letter_name_91
Letter name (language 2): Item 91
l2_letter_name_92
Letter name (language 2): Item 92
l2_letter_name_93
Letter name (language 2): Item 93
l2_letter_name_94
Letter name (language 2): Item 94
l2_letter_name_95
Letter name (language 2): Item 95
l2_letter_name_96
Letter name (language 2): Item 96
l2_letter_name_97
Letter name (language 2): Item 97
l2_letter_name_98
Letter name (language 2): Item 98
l2_letter_name_99
Letter name (language 2): Item 99
l2_letter_name_100
Letter name (language 2): Item 100
letter_sound_pm
Letter sound: Correct items per minute
letter_sound_score
Letter sound: Raw score
letter_sound_time_remain
Letter sound: Time remaining
letter_sound_time_allowed
Letter sound: Time allowed
letter_sound_time_elapsed
Letter sound: Time elapsed
letter_sound_score_pcnt
Letter sound: Percent correct
letter_sound_attempted
Letter sound: Attempted
letter_sound_attempted_pcnt
Letter sound: Percent correct of attempted
letter_sound_score_zero
Letter sound: Zero score indicator
letter_sound_auto_stop
Letter sound: Auto stop indicator
letter_sound_score_40s
Letter sound knowledge: Raw score (40 seconds)
letter_sound_1
Letter sound: Item 1
letter_sound_2
Letter sound: Item 2
letter_sound_3
Letter sound: Item 3
Total: 2880
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