Country ID - Numeric ISO Code
9999999999 = Omitted or invalid

Population ID
1 = Population 1
9 = Omitted or invalid

Standardized Grade ID
1 = Lower Grade
2 = Upper Grade
9 = Omitted or invalid

Grade ID
9 = Omitted or invalid

Student Wave Indicator
1 = Spring 2021
2 = Fall 2021
3 = Spring 2022
9 = Omitted or invalid

Student Participation Status Indicator
0 = Excluded and did not participate
1 = Left school permanently
2 = Absent
3 = Participated
4 = Parental permission denied
5 = Excluded and data available
6 = Removed from sample
7 = Instrument lost
9 = Omitted or invalid

Teacher ID
999999 = Omitted or invalid

Teacher Link Number
99 = Omitted or invalid

BOOKLET ID
0 = No booklet assigned as student is excluded

EXPLICIT STRATUM CODE
999 = Omitted or invalid

INT. READING SCALE BENCHMARK REACHED
1 = BELOW 400
2 = AT OR ABOVE 400 BUT BELOW 475
3 = AT OR ABOVE 475 BUT BELOW 550
4 = AT OR ABOVE 550 BUT BELOW 625
5 = AT OR ABOVE 625
9 = Omitted or invalid