Verb conjugation of "céder" in French

What do we do about the numbers? I skipped them because I wasn't sure. Because it is possible that somebody wants to know how to say 15 in Spanish. He should write out the word as 'fifteen', not as digits.
Carl said that he would need a private tutor for his spoiled son. My opinion is that sometimes this is counter productive measure as it gives the pupil a feeling of being weaker then the others and may lead to discouragement.
The course was a bit tough because the teacher always gave lots of homework. We were upset about his behaviour. He was very arrogant towards all the students. It was simply no fun to study there.