**Updated 2.25.21 with details from this post**
I ran texts from the AP Latin syllabus through Voyant Tools:
- 6,300 total words in length
- 2,800 forms (i.e. aberant + abest = 2)
- 1,100 meanings/lemmas (i.e. aberant + abest = 1 meaning of “awayness”)*
Based on the research of Paul Nation (2000), 98% of vocabulary must be known in order to just…read…a text. According to Nation’s research, then, Latin students must know about 6,175 words they encounter in the text in order to read the AP syllabus texts. That’s a text written with 1,100 words. To put that into perspective, it’s been reported that students reasonably acquire ~175 Latin words per year, for a total of something more like 750 by the end of four high school years. Needless to say, there’s a low chance that all 750 would be included the Latin on the AP, and that varies from learner to learner. Even if they were, though, 750 is still only 68% of the vocabulary at best. Although this percentage isn’t the same as text coverage since it doesn’t account for how many of the 1,100 words repeat, it’s safe to say that the number isn’t going to be wildly higher. Even approaching 80% text coverage is not good. We know that reading starts to get very cumbersome below 80%. This is just one reason why no student can actually read AP Latin. Oh wait…
****Those figures are just for Caesar****
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