But when you let students work at their own pace -- we see it over and over again -- you see students who took a little bit extra time on one concept or the other, but once they get through that concept, they just race ahead.
और हमने बार बार ऐसा होते देखा है -- देखिये जिन बच्चो में थोडा ज्यादा समय लिया किसी एक पाठ पर, मगर जब वो उसे समझ गये, तो वो तेज़ी से आगे निकल गये।