When I started teaching in 1986 safety glasses were "highly suggested" in the shop. I made them a requirement and the industry really has responded with better fitting, more modern designed glasses than what we had in the 60's and 70's with those ugly grey/green glasses and mesh side guards. Each of my students have to purchase their own and they must meet at the minimum Z87 requirements. I took a bunch of FFA kids to the Fort Wayne farm show and they always look at the cool safety glasses displayed by the company and their rep always comments to me about my student's knowledge of needing at least the Z87 requirement. Anything after the decimal just means it more than meets that requirement. It is not a fail safe, but sure better than nothing.
God and family, the rest is icing on the cake.
I'm so far behind, I think I'm in first place.
Premier Bovine Scatologist
Host of the 2015 FAMILY WOODWORKING GATHERING