Factual error: In the scene where St Matthews is Playing St Luke's in Football you can ADAMS printed on the chin strap of Matt Damon's Helmet. This movie was set back in the 40's or 50's and Adam's was not making those chin straps especially with ADAMS printed on the strap for many years to come.
Other mistake: It would have been extremely rare for Christian males to be circumcised during the time period of this film. Since David and his family are practising Jews, he would have been circumcised. Since all the boys at the school shower in a big group shower, they would have known and/or suspected David was Jewish from day one.
Trivia: During Rosh Hashannah eve, the Jewish New Year, the Headmaster Mr. Bartram walks in on David praying in the chapel. At that moment, David is praying 'Avinu Malkeinu' (definition Our Father, Our King). It is a special supplication recited one month (Jewish, not secular) before Rosh Hashannah and it ends on Yom Kippur, the Day of Atonement.
Add timeAllister Cooper, 2011