Online tutoring costs $25 to $50 per hour on average. Tutors often teach one or two subjects they're most experienced in, like math, English, chemistry, or foreign languages. Other tutors help prepare students for the SAT and teach multiple subjects.

Here at Tutors, we offer a library of self-guided, free online tutoring courses in the following subjects:

• Geometry
• Algebra
• English
• Chemistry
• Biology

Online tutoring is worth it because it saves time and money compared to traditional, in-person tutoring. Online sessions cost less than a private tutor coming to your home, and you don't have to spend any time driving to a meeting place or tutoring center. However, some students may prefer meeting face-to-face or may find using technology challenging.

Any student, from elementary age to graduate school, is eligible for tutoring. If you fit one or more of the following criteria, consider finding a tutor:

• You struggle with one or more subjects in school.
• You understand a subject in class but have a hard time doing homework on your own.
• You're preparing for a standardized test.
• You've missed classes and are having a hard time catching up.
• Your grades have declined suddenly.

Consider meeting with a tutor for 1 to 4 hours per week or 2 to 4 times per week, depending on the session length. Younger students may only be able to concentrate for 30 minutes at a time, while high school and college students can usually meet for 1 to 2 hours at a time.

Qualifications for online tutors vary by company. Some require a bachelor's or master's degree and formal teaching experience, while others only require a high school diploma as long as they pass a subject matter test.

When looking for a tutor through an agency, make sure to ask about their vetting process and education standards.

Most online tutor sites have a number of tutors that work for them, all with varying schedules and availabilities. If you prefer working with a particular tutor, you can usually indicate a preference in the website's system or schedule with a tutor directly.

First, search our list of tutors, then:

• Get three or more free estimates to compare.
• Read through reviews on Tutors and Google.
• Choose a tutor with relevant credentials and experience.
• Get a written estimate before your first session.
• Follow a payment schedule instead of paying up front.

When looking for online tutors, ask the following questions:

• How long have you been a tutor?
• What certifications or degrees do you have?
• When are you available to start?
• How often would you recommend meeting?
• Do you offer any discounts?
• What hours are you available?
• How long are your sessions?
• Will you give me a written estimate or contract?