This is the 257th most frequent Japanese word.
総合
"Integration" or "synthesis."
In this sentence, '総合的' (sougouteki) is used as an adjective meaning 'comprehensive' or 'overall', describing the 'evaluation'.
これは学校の総合的な評価です。
This is the overall evaluation of the school.
In this context, '総合的' (sougouteki) functions as an adjective meaning 'comprehensive', describing the necessity for a holistic judgment.
総合的な判断が必要です。
A comprehensive judgment is necessary.
Here, '総合' (sougou) is used as a noun meaning 'overall', referring to the overall position in a competition.