Will smoking green tea get you high?

It depends on the weed that you are using. Different species of weed have different amounts of THC, and the weed can grow THC crystals on the stems, but the stems do not contain as much THC as the leaves, so you shouldn't use strictly the stems. You're better off using the leaves, you can add the stems as well as the leaves and get the THC from them because you're going to strain the tea to remove the leaves and/or stems. Educate yourself.