Time is given to allow for careful development of responses. Testing and challenging of ideas is encouraged. (Para.13)

Meaning: Students are given time to develop their answers carefully. They are encouraged to prove and question whether certain ideas are right.
allow for: take into consideration
Allowing for the train's being late, we should be back by half past ten. 考虑到火车晚点，我们必须十点半回来。
You should allow for the weather when you plan for an outing. 制定郊游计划时, 应考虑到天气因素。