Mccutcheon Religious Instruction Vs. Instruction About Religion

In McCutcheon's article you read about 'religious instruction' versus 'instruction about religion'. The first is prohibited in public schools while the second is considered essential in public education accord to a Supreme Court ruling. Try to explain in your own words how you think these two are different. Why is one appropriate in public schools and the other not? You also read a quote from Max Muller in the Pals Introduction: "He who knows one knows none." What did he mean and how does this related to what the Supreme Court said about the need for 'instruction about religion'? Write one post of 200+ words on these questions