Student Inclusion/Exclusion Rules
In order to receive a growth percentile score in a state assessment content area, a student needs to have valid scores in that content area from two consecutive years, following a normal grade progression. This is just for a growth percentile to be calculated. For that growth score to be reported in a school or district summary, there are a few rules that exclude students for reasons of fairness:
Old Rule (based on AYP)
2010 Rule (based on Oct. 1)
In plain language, under the 2010 rules a school owns a student's growth data if s/he was enrolled in that school by Oct. 1 and was not subsequently expelled. A district owns a student's growth data if s/he was enrolled by Oct. 1 in one of the district's schools (and not in a detention center), or if s/he was listed as continuous in district.
The net effect of this change in exclusion rules is to include more students in school and district calculations, especially those who may have switched schools or districts after the CSAP testing window but who were in their seats by Oct. 1 of the current year.
Note that there is no mention of test invalidation codes in these rules. Because students without current and prior year valid test scores in a normal grade progression do not receive growth percentiles, there is no need for any discussion around growth score aggregations for students with invalidated test scores.