1 academies, run by a governing body, independent from the local council - they can follow a different curriculum.  grammar schools, run by the council, a foundation body or a trust - they select all or most of their pupils based on academic ability and there is often an exam to get in.
Complementary colors are pairs of colors which, when combined, cancel each other out. This means that when combined, they produce a grey-scale color like white or black. When placed next to each other, they create the strongest contrast for those particular two colors. Due to this striking color clash, the term opposite colors is often considered more appropriate than complementary colors.
The color absorbed by a primary color of paint is the complementary color of that paint. The three colors that are primary to an artist (magenta, cyan, and yellow) subtract red, green, and blue individually from an otherwise white sheet of paper.