公立学校老师必须有教师证才能上岗。
Private schools: Teachers in private schools may not be required to have certification.
要求公立学校老师要得到正式资格认定的有关条款也是有例外的。
The rules that require state-school teachers to be formally qualified do have exceptions.
曾是北京一所公立学校老师的尹建莉鼓励父母允许孩子们进行适当的冒险，并允许他们犯错。
Yin, a former Beijing public school teacher, urges parents to allow kids to take reasonable risks - and to make mistakes.
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