When can an addendum and an amendment be written to supplement the student’s IEP? Provide an example for each. In addition, what stakeholders need to sign these documents? Why are addenda and amendments important for IEPs?

Addendum and an amendment

When can an addendum and an amendment be written to supplement the student’s IEP? Provide an example for each. In addition, what stakeholders need to sign these documents? Why are addenda and amendments important for IEPs?

Response in 150 words.