We explored the use ofCalibrared Peer Revieww (CPR) to improve the writing skills of senior-level Mechanical and Aerospace Engineering students in n course on Experimental Methods (ME 120). We implemented CPR for three writing assignments andpioneered an approach to enable students to submit writing that included graphics through the use of Portable Document Format (pdfl files. We suspect that CPR did help improve the students’ writing and critical rending skills. but student surveys showed substantial discontent with its use.