You missed part of what I said, which is that a subgroup constitutes
either 100 students or a significant portion of the student body--last night I said I thought that percentage was 20. Let's just say for the sake of argument that the percentage is 10--but one of the the links below suggests that I was wrong and percentage is not factored in, that a subgroup consists of 100 students--Still, in the initial argument, which is that 1 student can throw off an entire school, if there were a percentage, and that percentage was only 10, there could only be 10 tested students within the entire school...
Let me also say that I'm basing my understanding on the state in which I live and work and breathe results. But, let's look at some links. Here is a
school's results (not where I live or work, chosen by the state's capitol). You can see that they have 145 tested students within the school, and the students are delineated by ethnicity and SES. You can see that there is only one subgroup at that school that is considered numerically significant, and that group has more than 100 students. Yes, there are special education students, but their numbers are not considered as a separate factor in the AYP.
Now, here is a
snapshot of the district as a whole. All the groups become numerically significant because the population of the district is much much larger than that of the one school, and thus, each subgroup will have it's own AYP to meet in addition to the district as a whole needing to make AYP goals.
Here is
one more--now, I'm just mostly doing this randomly, but this last one I chose because their API score is 920, which tells me that greater than 75% of their population is proficient and advanced. Now this school has a total tested population of 325, and their Hispanic/Latino population is 59, which is considered a subgroup, and suggests that some percentage of a population is considered significant. Maybe it's 15%, since that would generate a number equal or greater to 48, and their Asian population is not considered numerically significant.
So, that's why I contend that one student cannot significantly tilt a school's AYP results. I would also suggest that your subgroups are based upon the entire tested population, not broken down by grade, which is different.
eta; And duh! directed at myself! I clicked on the "subgroups" link and it says
this;
A numerically significant subgroup for the API is defined as:
* 100 or more students with valid STAR Program scores
OR
* 50 or more students with valid STAR Program scores who make up at least 15 percent of the total valid STAR Program scores.