The Friedman Foundation for Educational Choice has today released its annual comprehensive report cataloging various school choice programs across the country, such as tax-credit scholarships, education savings accounts, vouchers, and individual tax credits.
In addition, this year, the report includes a graph of the programs’ percentage of eligible population versus the purchasing power of the program.

The (somewhat mesmerizing) graph shows that while vouchers and education savings account programs are available to fewer students, they tend to have stronger per-pupil funding. On the flip side, tax-credit scholarships and individual tax-credit programs are available to larger segments of the population but provide less per-pupil funding.
Another helpful resource in the report is a history of the various legal challenges to each of the school choice programs (which can be viewed here and here).