Should I not bother with the membership until I figure out which school to go to?
Unless I'm mistaken, you're in the US. Will you be skating on either club's private ice, or just going to their home rinks for ice time?
Almost all rinks have open ice time (public or freestyle) that anyone can skate on without being a member of a skating club. A few clubs require membership in order to skate on their rented ice, but most don't control the rink schedules and admission. (SC of Boston is an exception - they own the rink so they call the shots.
If possible, hold off on joining any club until (1) you actual start taking private lessons with a coach and (2) you know where you'll be living.
Do they let you switch clubs?
Yep - it's an easy switch. HOWEVER, if you join one club and try to switch mid-year to another, you'll probably have to pay for both clubs. Better to wait. (I speak from experience - I was a member of one club and I moved out of state after the season started. The new club made me pay for a full membership and the old club wouldn't issue a refund or pro-rate the fee I had already paid.)
Does testing progress only confine to one club?
The Standard/Adult testing is done by clubs and registered on the official, nationwide, US Figure Skating site. Once you pass a test, it's yours for life. I know that wasn't your question, so read on...
Clubs sponsoring test sessions typically:
. Allow their members to register earlier for the session and receive preference if the session fills up quickly.
. Charge a lower test fee to their members, or offer a "rebate" at the end of the year to the members who have tested.
. Add on a "hospitality" or "out of club" fee to skaters who are not members of the hosting club.
A skater can only have one "home club" on the US Figure Skating system. That is the club you join as a full member. However, most clubs also offer associate memberships. The associate membership is basically a "second choice" membership, that affords the skater some/all of the benefits as their full members. Our club allows Associates to have "first dibs" at test and event registrations, waives the "out of club" hospitality fee for test sessions, and allows them to attend awards parties, exhibitions, and open skating events. Basically, they're one of our own. The only thing they don't receive is our skater support activity grants, but their home club should augment that anyway.
I've been a member of a few clubs that had "club ice" sessions. They usually allow a skater to pay for 1-3 sessions so that they can try out the club and see if they fit in well. You might find that one club's freestyle sessions are too crowded or the skaters are unfriendly. If that's the case, don't join the club.
Given your current status, I would say hold off on joining any club until you're ready to test. You can join at any time of the year, although June is a little tricky because the membership year ends 6/30. Talk to the membership chair about that scenario.
However, if either club offers an inexpensive (<$40) Learn to Skate USA membership, take that for now at the club of your choice. It will put you on their email distribution so you can find out what's going on and when, and it adds you to the national database for LTS USA as well as US Figure Skating. Plus, you get a cool welcome packet with an ID card, magazine and propaganda. Some of my skaters have also receive skate drying towels and gloves plus trinkets like zipper pulls, chapstick and pencils. This is separate from the "official" US Figure Skating+Club membership, so it won't affect your ability to join a club at test time. Our club gives the skater a credit towards the full membership if they move up mid-year, so it's a no-lose situation.
Note about memberships:
LTS USA - basically, a cheap way to keep up with a club without spending a lot of money. You can join at
www.learntoskateusa.com for < $20, but if you join through a skating club, you pay a little more but get more out of it. Just being ont he mailing list is a good thing. Bonus: our LTS USA skaters can perform in our member exhibitions for free, whereas outsiders have to pay $20.
Introductory - this is a one-time, deeply discounted
full membership. You can only request it once; it's intended for skaters just getting started in testing/competing.
Collegiate - this is a discounted, four-year membership for students enrolled at a college or university. It's the best buy for a full membership, but wait until you're ready to test because the 4-yr clock starts as soon as you register with the club. You do have to prove that you are attending a college/university.
Junior/Parent - skaters under 18 have to join with a parent. No discounts.
Senior - skaters over 18, no parent required. No discounts. (Our club also has Senior Couple, which is for two adult skaters. Less expensive than Family)
Family - if there are more than 2 skaters in a family, this is usually the least-expensive option. No discounts.
Typically, full memberships also require a volunteer committment.