I did two this semester for my 3rd years. Low level school minimum 5 sentences. They were given the topic a week before and had to write it in the following class.
topics were What do you think is the best invention and why/
Introduce someone you would like to compliment.
Grading was based on number of sentences.
Spelling mistakes: 0-1, 2-4, 5-7, 8+
Grammar mistakes: 0-2, 3-5, 6-8, 9+
content: introduction, conclusion, and supporting sentences, intro and supporting, some information on the topic, anything in a complete sentence.
past topics have been about a dream job and talking about a trip that you have been on.