The Open Practice Vault.
Master every question pattern on the 2026 Digital SAT and ACT. Each item is calibrated to official exam difficulty and paired with zero-latency Socratic derivations and Desmos speed hacks.
Digital SAT Question Bank
Fully aligned with the multistage adaptive testing framework. Covers Algebra, Advanced Math, Problem-Solving, and Reading & Writing conventions.
Digital ACT Question Bank
Rigorous section drills covering Math, English punctuation/usage, Data Representation Science, and high-speed Reading comprehension.
Featured Daily Drill Questions
Jump directly into calibrated items across math and verbal disciplines.
Of 100 students surveyed, 65 like math, 45 like physics, and 25 like both. How many like neither subject?...
Despite his public reputation as a ruthless corporate raider who would dismantle companies without a second thought, billionaire investor Ri...
Based on Table 29, the induced electromotive force (EMF) is: Experiment Context (Electromagnetic Induction in a Wire Coil): Students moved a...
Linguistic anthropologist Dr. Kalia Sen studied the whistled language of the Gavião people in the Amazon basin. Known as Silbo, this acousti...
Which of the following complex numbers is equivalent to the expression (3 + 4i) / (1 - 2i)?...
The atmospheric pressure \( P \), in kilopascals (kPa), at an altitude of \( h \) kilometers above Earth's surface can be modeled by the equ...
Everything you need before exam day.
Take our adaptive 4-question diagnostic to benchmark your score, learn the 22 master Desmos hacks, or calculate your test trajectory with real raw-to-scaled conversion tables.