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The school asks you to "keep a record" and hands you a blank grid. This is that grid, except it adds up what you write: which part of the day it keeps happening, which day of the week, what came immediately before, and what happened afterwards. Antecedent, behavior, consequence — the format a BCBA and an IEP team will actually work from. Everything stays on this device: no account, no login, nothing sent anywhere.
The second column is the one people skip, and it is often the more useful of the two. If one response shows up again and again next to the same antecedent, that pairing is worth raising — not as blame, but as the thing to change first.
The PDF is the one to bring to a meeting. The HTML file is a copy you can open on any device.
The single thing that makes an ABC log useful or useless is the behavior column. "Was aggressive" and "had a meltdown" cannot be counted, argued with, or matched against a strategy. "Threw the pencil case, then lay on the floor under the table for eleven minutes" can. Same for the antecedent: not "got upset over nothing", but "was asked to stop drawing and line up, no warning given".
It feels clinical to write about your own child that way, and most parents hate the first few entries. It is worth it, because it is the difference between a meeting that talks about your child's character and a meeting that talks about what the adults will do differently on Tuesday morning.
A log with only bad days shows a child who is always struggling. A log that also shows the fortnight where nothing happened tells you what was different about that fortnight — and that is usually the most valuable page in the whole record. If a week goes by with nothing to enter, that is data.
There is no copy anywhere else. Here is what disappears:
Step 1 — take a copy first
Step 2 — type ERASE EVERYTHING
You will get about fifteen seconds to undo it before it is final.
ABC stands for antecedent, behavior, consequence — what happened immediately before, what the child actually did, and what happened afterwards. Behavior specialists use it because the antecedent and the consequence are usually where the answer is: the same behavior can mean escape from a demand, a request for attention, or pain nobody has spotted yet. A description of the behavior alone cannot tell you which.
Usually somewhere between ten and twenty. Below that the charts are noise. Two weeks of honest logging, including the days when nothing happened, is far more persuasive at a meeting than a month of only the bad days.
No. Everything stays in this browser on this device. There is no account and no server. That also means clearing your browsing data erases it, so use the PDF or backup export if the log matters — and it usually does, because it is the evidence you bring to a meeting.