
The College Follow-up Staff bas this to say about these findings:
Some of these differences were not large, but wherever reported, they were consistent for each class. It is apparent that when one finds even small margins of difference for a number of large groups, the probability greatly increases that the differences cannot be due to chance alone.
It is quite obvious from these data that the Thirty Schools graduates, as a group, have done a somewhat better job than the comparison group whether success is judged by college standards, by the students' contemporaries, or by the individual students. 6
When these results began to emerge, the Directing Committee and school Heads asked whether this creditable showing might be due to the graduates of those of the Thirty Schools which had not departed greatly from traditional patterns and ways of college preparation. To answer this question the College Staff analyzed the records of the graduates of the six participating schools in which least change had taken place and the records of the graduates of the six schools in which the most marked departures from conventional college preparatory courses had been made. Each of these groups was studied in relation to its respective comparison group.
This investigation revealed that
The graduates of the most experimental schools were strikingly more successful than their matchees. Differences in their favor were much greater than the differences between the total Thirty Schools and their comparison group. Conversely, there were no large or consistent differences between the least experimental graduates and their comparison group. For these students the differences were smaller and less consistent than for the total Thirty Schools and their comparison group. 7
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