Comment Re:Dragon Zakura (Score 1) 91
Of course ! The simpler a sentence is, and the smaller a vocabulary you use, the more easy it is to understand.
So if the assignment is: "Write a sentence that is as easy to understand as possible", then something like "I am a boy" should score top grades. It's among the simplest sentences you can write, and it uses only words that tend to be taught in the first couple weeks of english-class.
If you're trying to set a grade for how much english a person has learnt after several years of schooling, then not so much. Then they should actually demonstrate that they understand and can use both a larger vocabulary, and more grammar and syntax. (on a high level, you'd also want to get idioms and nuances right)