Children's education issues give parents a real headache.
Tips
grammar
伤脑筋 is a separable verb-object phrase. The object 脑筋 can be split: 伤了不少脑筋 (shāng le bùshǎo nǎojīn, 'racked quite a lot of brains'). It's often used with 让人 (ràng rén) or 令人 (lìng rén) — 'makes one...'