不足为法

zhè míng xué sheng de zhuǎn biàn kě néng yǒu rén rèn wéi yǔ wù zhì gǔ lì yǒu guān bù zú wéi fǎ

这名学生的转变，可能有人认为与物质鼓励有关，不足为法。

Some may say material rewards have contributed to his change and it is not the best way to offer material incentives.