Complex sentence: The assessment includes an online portion of multiple choice, which is graded by the computer, and/or an offline portion of short answer/mutiple choice which is graded by the learning coach with the teacher guide and entered into the computer.
Split into simpler sentences: The assessment includes an online portion of multiple choice, which is graded by the computer, or an offline portion, or both, of short answer/multiple choice. Offline portions are graded by the learning coach with the teacher guide and entered into the computer.