he missed more than 50 days of school. >> mold at hinsdale, she said, was making her son sick. >> this bag represents most of the medications that matthew was on last year. this is zopanax, he was given this. when he left school, he needs none of this. >> this is actually a zero. >> reporter: alexandria's parents pulled her from hinsdale this fall after a persistent cough wouldn't go away. that was a tough decision, because her father, paul, was on the school board at the time. >> she was put on a nebulizer, steroids, and another medication. since she's been home-schooled, she hasn't been on any of it. >> reporter: the school district spent $16,000 this fall to get rid of the mold at hinsdale. and the board is now trying to decide whether to close the school temporarily to replace a leaky roof and make other repairs. only about 20 to 30% of the population is susceptible to in-door air problems like mold or dust, but for those who are, the symptoms get increasingly severe. in fairfield, connecticut, so many students and teachers were getting sick with respiratory problems that officials

a typical school day at hinsdale, elementary.ne fourth greater won't be there this morning or any morning. >> now if you look at him, what do you think? do you think he will be friendly? are. >> matthew's mother is home schooling her son this year. >> when he was out of school, he was well. when he was in school, he became ill. last year was by far his worst year. he missed more than 50 days of school. >> mold at hinsdale was making her son sick. >> this bag represents most of the medications that matthew was on last year. he was given this right before he went in the hospital. when he left school he left all this behind too. he needs none of it. this is garbage. >> this is actually a zero. >> alexandria's parents pulled her after a cough wouldn't go away. that was a tough decision because her father, paul, was on the school board at the time. >> she was put on a nebulizer and steroids and another medication. since she has been at parochial school she hasn't been on any of it. >> the school district spent $16,000 to get rid of th

. >> reporter: mold at hinsdale, she says was making her son sick. >> this bag represents most of thens that matthew was on last year. this was right before he went in the hospital. when he left school hereby left all this behind, too. he needs none of it. so this is garbage. >> this is actually a zero. >> reporter: alexandria's parents pulled her from school this fall after a persistent cough wouldn't go away. it was a tough decision because her father, paul, was principal at the school. >> since she's been at parochial school, she hasn't been on any of it. >> reporter: the school system spent $16,000 to get rid of the mold at hinesdale. the school board is trying to decide whether to close the school to make other repairs. only about 20% of the population is susceptible to indoor air problems like mold or dust. but for those who are, the symptoms get increasingly severe. in fairfield, connecticut, so many of the students were getting sek, officials decided to tear down mckinley elementary and start from scratch. the school was riddled with mold. >> i started to get sick the second y