"A" Student completes all important components of the task and communicates ideas clearly; demonstrates an in-depth understanding of the relevant concepts and/or processes.

"B" Student completes most important components of the task and communicates ideas clearly; demonstrates an understanding of the major concepts involved.

"C" Student completes some important components of the task; attempts to communicate ideas; may demonstrate gaps in conceptual understanding.

"D" Student addresses only a small portion of the task and shows minimal understanding.

"I" the answer is incorrect, irrelevant, or missing.