The sophomore year has a reputation for being flat, and whatever the research on that, most teachers recognize it. Ninth grade had the novelty of a new building. Eleventh grade has the pressure of college. In between, students take dense, vocabulary-heavy courses and quietly stop doing the work that is not graded. That is a good description of practice.
Three typical courses, three different problems
Chemistry: units and the mole
The trouble in chemistry is stacking. Students who never got comfortable with unit conversion cannot do stoichiometry, however well you explain it. Upload the unit on conversions and measurement as its own course or as the first block of the chemistry course, and the grid will show you who needs it before the mole arrives. Chemistry is also famous for misconceptions that survive instruction, such as the belief that breaking a bond releases energy, or that mass disappears when something burns. The skill packs name the common wrong ideas outright, and the wrong options on practice questions are linked to them, so a wrong answer is diagnostic. Check them against your own judgment in the review queue, as a chemistry teacher should.
Geometry: the diagrams are the content
Geometry is the course where ClassSense is weakest, and it is better that you know now. A theorem is a diagram with labels, and diagrams do not survive extraction. What does work is the vocabulary and the logic around it: definitions, postulate statements, formula recall, the conditions under which a theorem applies, and the naming of congruence statements. Treat ClassSense as practice for the language of geometry and keep proofs and constructions in your own hands.
World history: sequence and cause
History uploads very well when the source is prose: your notes, a reading, a timeline written as text. Practice questions on chronology, causation and vocabulary are well within a multiple choice format. What is not is the thing your course is really about, which is argument from evidence. Document-based and long-form writing is still yours to read.
A regular, light rhythm
A pattern that suits this year is a short block of practice at the start of class two or three days a week on the unit you are teaching, with a final practice pass in the week before the test. It is not another homework assignment. ClassSense has no assignments or deadlines, so the structure comes from you.
Early exam courses. Some schools put sophomores in a first AP course or begin PSAT-style preparation. The approach for those is the same as on the 11th grade page: spread practice across the year, from material you have the right to use.
Honest limits
Official grades are entered by hand. Written work is yours. Anything shown only as an image, such as a periodic table, a map or a diagram of a reaction, is read as nothing. And if a unit is a thin handout, the lesson is only as good as the handout, so give ClassSense the full text.
For the subject pages, see chemistry lessons, geometry lessons and world history lessons.
Common questions
Can I use it for Algebra 2 as well?
Yes, with the same caution as other math courses: use documents where the notation is real text, not pictures, and try one unit first.
Will students actually do practice that is not graded?
Some will not, and no tool fixes that. Games help, and the dashboard shows who is stuck. You decide whether a practice block counts toward a grade.
Does it handle chemistry formulas?
Formulas typed as text extract reasonably. Structural diagrams and anything embedded as an image do not.