Decide which word or phrase expresses an idea most clearly. Usually this involves being able to articulate a few points on your opinion of a topic, a counterpoint, and giving real examples to illustrate your points. Problems with punctuating a series of items. Errors may be frequently distracting and may significantly impede understanding.
There may be some distracting errors, but they do not impede understanding. Shows a good control of the conventions of standard written English and is free of significant errors that detract from the quality of writing. Maturity and wisdom can sneak in, the kind most teens are lacking.
You can't do well if you don't try. Transitions, if used, are simple and obvious, and they may be inappropriate or misleading. If your school list is already set, you can check the colleges' websites to see if they require the essay.
Language is competent.
Readers avoid extremes What is almost universally true about grading of standardized test essays is that readers gravitate to the middle of the scale. There may be a few errors, but they are rarely distracting. Lack of agreement between pronouns and antecedents, between subjects and verbs, and between nouns.
After I was successful on my College football team, I realized that I wasn't a writer and that I didn't want to waste my time writing boring essays.