Of the four national exams covered on this site, the CLT is the most genuinely accessible to students testing from outside the United States, thanks to its remote-proctoring option.
How remote testing actually works
The CLT offers a remotely-proctored testing option, allowing students to take the exam at home using their own computer, with a live proctor monitoring the session online. This effectively removes the biggest logistical barrier international students typically face with other exams -- there's no need to travel to a physical, authorized test center in your country, since the exam can be taken from wherever you have a computer and a reliable internet connection.
Related: What to Expect on the CLT: Format, Scoring, and How to Prepare
No extra cost or restricted dates for international students
International students are welcome to take the CLT under the same terms as domestic students -- there's no separate or additional fee specifically for testing internationally, and all publicly available test dates are open to international students the same way they're open to students testing within the U.S.
What to check before you register
Because the CLT is accepted at a specific, though growing, list of partner colleges (over 350 as of this writing), confirm that your specific target schools actually accept the CLT before committing to it as your primary test -- particularly important for international applicants who may be applying to a mix of U.S. and international institutions, some of which may not yet be familiar with or accept the CLT the way they would the SAT or ACT. Check directly with each target school's admissions office if you're at all unsure.
Technical requirements for remote testing
Since remote proctoring depends on a stable internet connection and a functioning webcam and microphone for the proctor to monitor your session, test your equipment well before your scheduled test date -- a technical failure during a remotely-proctored exam can be more disruptive to resolve than an equivalent issue at a staffed physical test center. Check CLT's own current technical requirements and system checks directly on their site before test day.
The bottom line
If you're an international student weighing your college-entrance-exam options, the CLT's remote-proctoring option removes a real logistical barrier that both the DAT and OAT (restricted to U.S./Canada Prometric centers) present, and that even the ACT (fewer international test dates, in-person only) doesn't fully solve. Confirm your target schools accept the CLT, then register for a remote session directly through CLT's own site.