1 Secretion of erythropoietin, which regulates red blood cell production in the bone marrow. 2  Secretion of renin, which is a key part of the reninâangiotensinâaldosterone system. 3  Secretion of the active form of vitamin D (calcitriol) and prostaglandins.
A: A charter school is a public school that is organized and operated according to the terms of the. charter, or contract. A charter school cannot have admissions criteria or charge tuition. A private school is not subject to state school laws, local board of education policies, or State Board of Education rules.
Magnet schools, a category of public schools, offer students and parents a choice of a different kind of education. They also offer new and exciting teaching jobs. Whereas charter schools are guided by a contract that gives them autonomy, magnet schools do not have charters and are subject to the regulations and guidelines of the public school administration.