BSCI验厂审核有效性如下：
A 或 B 级：
除非需要进行跟进审核，正常情况下BSCI 全面审核在2年内有效。在这种情况下，工厂的总评级是A或B级。
凡被评为A和B级的工厂都有机会在两次全面审核期间接受突击抽查。
C、D 或 E 级：
当工厂在全面审核后收到总评级为C、D或E时，工厂需要在60天内在平台上提交改善计划（依照下页的操作指引），该审核在进行跟进审核前有效。
跟进审核应按照改善计划规定的日期执行，但仅在最近的审核后的12个月内进行。
若跟进审核结果表明有改进（例如获评A或B 级），最新的审核结果将保持有效至原全审到期日为止。
若跟进审核结果是 C、D 或E级，该跟进审核结果有效期到下一次跟进审核期为止。
英文：
Rating A or B:
BSCI full audits are valid for 2 years, unless follow-up audits are to be conducted. This is the case for factories that receive an overall rating of A or B.
Factories rated A and B are eligible to receive a Random Unannounced Check in the period between the two full audits.
Rating C, D or E:
When a factory receives an overall rating of C, D or E after a full audit, the factory has to submit improvement plan through the platform (According to operation guidance of following page), this audit is valid until the follow-up audit is conducted.
The follow-up audit shall be conducted on the date defined in the Remediation Plan but it can only take place up to a maximum of 12 months after the last audit。
If the result of the follow-up audit shows improvements (A or B rating) then the audit is valid until the full audit is due。