It doesn't have any evidence to back it up for real reasons why having a school uniform is a bad thing. If it said, "It's a bad ideal for the school to get school uniforms because it cost a lot of money, time that can be used for teaching, and supplies for other classes."
Answer:
When using indirect or reported speech, the form changes. Usually indirect speech is introduced by the verb said, as in I said, Bill said, or they said. Using the verb say in this tense, indicates that something was said in the past. In these cases, the main verb in the reported sentence is put in the past.