We don't have a specific report for this.
However, when you generate a CTF for a student, you can go to the Extended tab of their profile.
Under School Information there is a field for "CTF Sent Date" for you to enter the date the CTF was sent.
Now you can go to Reporting > Custom Reports > New Report. Under Display Columns, click the Dates header and tick CTF Sent Date and Run the report.
Under the First Name header type in the students name and click enter on your keyboard - this is now a report to show a CTF has been sent for that child.