SchoolWork - Coloring certain cells by text criteria

I am working on a master class-schedule for students in our school. Depending on their program (Medical, Dental, or Pharmacy), they are required to take some courses and not others.

Students names run down column A (A2:A11). Their program (Medical, Dental, Pharmacy) is listed next to their name in column B. All of the classes offered at the school are listed across row 1 (C1:R1).

Based on their respective program, I'd like to color gray, the cells of classes not required for each student. Is there a way, short of manually formatting each cell in the row?

Thanks. (see the screen shot -for a sample)

Thanks for your response, Bruce. That was a great idea.
I tried to use the formula as you posted, but it turned everything gray, regardless and auto-corrected my entry to something wierd (=B2=""Dental""").

Nonetheless, by typing in C2
Formula is: =IF($B2="Dental",TRUE,FALSE) and formatting pattern to gray

and in D2
Formula is: =IF($B2="Dental",TRUE,FALSE) and formatting pattern to gray
Formula is: =IF($B2="Pharmacy",TRUE,FALSE) and formatting pattern to gray

...it works!

I would never have thought to try that otherwise -with the whole "formula is" thing- so thanks again for your tip.