Pennsylvania’s unusually generous college savings tax break -- up to $15,000 per parent, for contributions to any state’s 529 investment program -- shielded $814 million in Pennsylvanians’ contributions to college savings plans last year.

That includes $277 million in tax savings that went to users of “out of state 529 plans," says Mike Connolly, spokesman for state Treasurer Joe Torsella. Torsella thinks we ought to end the out-of-state break and direct more investments to the Pennsylvania plans, “which would allow us to lower fees.”

Pennsylvania has two 529 options. Last Sunday, “you give real short shrift to Pennsylvania’s unique pre-paid program, the Guaranteed Savings Program,” complained reader Lee Bender.

It’s not exactly a popular program. Still, Pennsylvania invested about $1.9 billion as of Dec. 31 for college savers under the GSP, which sells tuition credits whose value rises as colleges jack up their prices. Pennsylvanians saved more -- $2.7 billion -- in the state’s regular 529 college savings account, whose value, like a 401(k) plan, rises and falls with stocks and bonds in plan choices, including Vanguard investment funds. Such plans in all 50 states now hold more than $30 billion in parent savings.

Bender and fellow reader Frank Farina say GSP was a big help in paying for their kids’ colleges: “I just put my two boys through college using the GSP plan very successfully,” Bender told me. GSP saved his family from annual college tuition increases as well as from “the vagaries of the market," which he suffered earlier in the 2001 stock-market bust. His earlier tax-protected savings accounts that lacked a guarantee "took years to recover” from that downturn

Bender also praises the “extreme ease of use of the GSP program to pay tuition to Penn State." Just “a few clicks” and the money went right to Happy Valley. Compared with Pennsylvania’s standard 529 plan, “the Guaranteed Savings Program is the far superior plan," he concludes. "Otherwise you are playing the market, and I do not want to play with my kids’ college funds.”

Farina also bought into GSP after the stock market plunged in 2001, when he had three kids facing college. He suggests that anyone saving for college today look into doing the same “in light of where the stock market might be heading after the extended bull market ends with the inevitable crash."

Farina appreciated that GSP offered Penn State tuition as a benchmark guarantee. He figured that Penn State would keep boosting its price -- making early GSP savings a bargain -- given the state’s declining support for college funding, as well as the school’s sturdy academic reputation. Add the program’s lack of broker fees and protection from market drops, and Farina was sold.

His kids didn’t even end up going to Penn State, but the benchmark guarantee helped him fund their studies at Cornell, the University of Vermont, and James Madison -- three undergraduate degrees plus two MBAs and a law school program.

Farina shared what he set aside for his youngest child -- $65,900, in 2001 to 2003 -- and what he got back -- $79,600 for undergraduate tuition (2005 to 2008), plus $27,700 for graduate school (2017 to 2018) -- add that together and Farina calculates his total return at more than 60 percent over that period.

He might have grossed more than that by investing the money in the S&P 500 -- but this was “tax free and risk free. And I got a decent return, and was able to sleep at night knowing their accounts were not wiped out by the vagaries of the stock market,” Farina concluded. He has since retired to North Carolina.

Reader Bernie McGorrey says he didn’t tie up his money in savings programs: “We went a different route to finance our three boys’ education.” Here is McGorrey’s five-step program:

1. “Pay off the house early. (I worked two and three jobs.)” That frees you to help the kids, as needed.

2. "Encourage them to go to state colleges.” He got partway there. His kids picked state-run Kutztown University, private Moravian College (with a half-scholarship), and a trade school.

3. “Expect children to work over the summer, to have some ‘skin in the game.’”

4. Use a home equity loan, instead of federal student loans: “Home equity rates were lower than for student loans.”

5. Rely on families, not federal student loans, as lenders of last resort: "Kids pay the parents back with a zero-interest loan over four to eight years.”

Of course, there was a “bump in the road,” McGorrey adds, when then-Gov. Tom Corbett cut funding at state colleges in 2010, raising tuition at Kutztown. The family tightened their belts and moved forward.

McGorrey’s full program can work -- if you own a house and can scare up some cash to lend your kids. (Our own program for the six college kids in our house was similar, though our mortgage payments were low enough that I saw no point in paying it off early, and most of our kids did tap federal direct student loans. And besides state-backed schools, we also encouraged them to apply to elite schools, which have a lot of money for academic scholarships.)

Reader Saul Katz sees another advantage to using the state savings programs: Assets in a Pennsylvania 529 plan (but not out-of-state plans) are exempt from the state’s inheritance tax.

John Burnes asks: “If one has an existing 529, can those assets be readily moved to a more attractive 529?” (Yes, with some conditions, says Connolly. If the two plans are for one person, money can be shifted once a year. Or more often, if the accounts are for different people in the same family.)

Will the state treasurer get his wish and persuade the state to trim the tax break for out-of state plans? I expect that will be resisted, in Harrisburg lobbying, because it won’t be popular among financial advisers who sell out-of-state plans, or with money managers such as Vanguard and American whose funds are sold to Pennsylvanians by 529 plans in other states. Colleges may not like it, either, because most of them face a declining applicant pool and welcome all the tax breaks their student families can get.