Curriculum & Concept Directory

Digital SAT Tested Skills Index

Every question on the Digital SAT tests a specific, identifiable skill or behavior. Browse our comprehensive skill guides below to understand the test specifications, common trap answers, and worked solutions.

Algebra (~35% of SAT Math)

Linear Equations & Slope in Context →

Unwinding 1-variable equations, naming what slope and y-intercept represent in context, and recognizing 'no solution' traps.

Read full guide & practice →

Systems of Equations & Linear Modeling →

Solving pairs of lines using elimination vs substitution, matching coefficients for infinite solutions, and Desmos intersection tricks.

Read full guide & practice →

Quadratic Equations & Vertex Form →

Zero-product property, discriminant roots counting, vertex form maximums and minimums, and graphical Desmos solutions.

Read full guide & practice →

Geometry & Trigonometry (~15% of SAT Math)

Circle Equations & Completing the Square →

Standard form (x-h)^2 + (y-k)^2 = r^2, fast completing the square, tangent line perpendiculars, and instant Desmos graphing.

Read full guide & practice →

Information & Ideas (~26% of Reading & Writing)

Command of Evidence & Quantitative Analysis →

Isolating researcher hypotheses, filtering out true-but-irrelevant distractors, and interpreting charts and tables with 100% accuracy.

Read full guide & practice →

Expression of Ideas (~20% of Reading & Writing)

Transition Words & Logical Connectors →

Continuation, contrast, and cause words. The 3-step mechanical reading method to solve transition blanks without second-guessing.

Read full guide & practice →

Standard English Conventions (~26% of Reading & Writing)

Sentence Boundaries & Punctuation Rules →

Eliminating comma splices, mastering semicolons, colons, and dashes to connect independent clauses in under 15 seconds.

Read full guide & practice →

Start a free SAT diagnostic Back to Digital SAT overview