I have this one saved in my archives - at least one school district equates Lexile with reading levels, and this shows 1300 as 1st/2nd year college level. It's at least a data point to start from - I'm sure I could buid a pretty good argument from it.
http://languageartsreading.dadeschools.net/pdf/FAIR/LexileConversionChart.pdf But to be honest, while I've tracked my kids' Lexile scores over the years, I don't put much weight in them and didn't use them in any of my gifted planning meetings at school. I don't think any teacher ever mentioned it, and they certainly paid attention to NWEA/MAP/RIT scores. Both kids jumped up and down quite a bit year-to-year/test-to-test, and low repeatability warns me of low accuracy.
Example - my youngest went 1030, 1250, 1520 from Fall 4th grade (age 9) to Fall 5th grade (10). I don't think she jumped ~8-9 grade levels in 12 months.
I searched everything else I had stored, but just about every other one just has "max score"+ at the high end, starting at 1085+ (RIT 237) in 5th through 1320 (RIT 250) in 12th.
