Hold up, that contract is like super in Class A's favor. If it works out, then Class A basically get the equivalent of 300 class points (2 leaders and 200 test points which become class points after the test). Those 300 additional class points also gives them 30,000 private points per student per month. Meanwhile Ryuuen only gets 20,000 private points per student per month and no class points. Class A benefits so much more. Especially considering having the most class points is the ultimate goal of the school.
The contract did not work out how it was supposed to because of Kiyo and the traitor in Class A, but how the contract is written seems super lopsided for Class A to me.