Closing sentence doesn't relate back to main idea. Main idea sentence is well stated and correctly placed. Main idea is restated in the closing sentence. Main idea sentence is exceptionally clear and correctly placed. Main idea is restated in the closing sentence.
Mechanics are correct.
Paragraph has many punctuation, capitalization, and spelling errors. Paragraph has several punctuation, capitalization, and spelling errors. Paragraph has very few punctuation, capitalization, and spelling errors. Paragraph has no punctuation, capitalization, and spelling errors. Paragraphs have at least two supporting detail sentences which relate back to the main idea.