If you are indeed in danger of not meeting the standards, the school HAS TO alert you to that possibility as early as possible AND has to set in place support measures to assist you in meeting the standards before the end of your Induction period. You cannot choose to extend your Induction. Only the LA can do that. When an NQT is in difficulties, it's usual for an LA advisor to attend to observe the NQT teaching.That might be an opportunity to ask about being granted extra time. The only other way for an extra Induction period is you are failed after the end of term 3 and can prove in the Appeal process that your Induction was not conducted properly. That's a last resort, risky business. If a FAIL is upheld, that's the end of your opportunity to teach in the State maintained sector for ever. To avoid that, most NQTs facing a Fail in their final Induction term get Union help to negotiate an early release from their contract. Finish before the end of the term and the school do not come to a 3rd term/overall Induction verdict. Your pay stops with the last day in school but you are free to do the final Induction term elsewhere.