High school students apply to colleges in fall of senior year.
EFC = expected family contribution. The government determines an EFC from information provided on the FAFSA form; this FAFSA EFC is used to determine Pell grant eligibility. Each college may determine its own EFC from FAFSA and sometimes additional forms like the CSS Profile or a college’s own form. The college’s own EFC for you is used for financial aid grants that the college may give you. Use each college’s net price calculator on its web site to see an estimate.
EC = extracurricular.
Note that Baylor and TCU are of different denominations (Baptist and Disciples of Christ respectively).