1 Girls start having periods at different times depending on how quickly they are developing.  If a girl has not had her first period by the time she is 16, this is still probably normal, but it would be worth checking with a doctor.
IETMS stands for Interactive Electronic Technical Manual System. Israeli English Teachers' Network. Institution of Engineering and Technology Northern Ireland. Institute of Engineering Technology of Ontario (Canada) Interagency Environmental Technology Office (Washington, DC) Industrial Effluent Treatment Plant.
How IEPs Help Students With Learning Disabilities. The acronym IEP stands for slightly different words. In addition to Individualized Education Program, it is also known as an Individualized Education Plan, Individual Education Plan or Individual Education Program. While the names for this document vary, it performs the same function. An IEP is the legal document that defines a child's special education program.