I had to chuckle....the only time I ever got a "D" in primary school was in 1st grade, when the battle-axe I had gave me a "D" in Writing. She demanded that we copy the cursive letters *exactly* matching the green posters encircling the classroom. I always preferred to print, and never could achieve perfection copying.
Handwriting is almost like a fingerprint. I've known people to make very small improvement in their writing but large changes? I'm skeptical.
I just wrote a few notes with fountain pen to my family this evening. Thanks to Getty Dubay "Write Now" and a little diligent practice, they would tell you I went from illegible to fully legible and sometimes beautiful in three or so months.
It's been a few years since, and I am still learning. Early on I made key changes like using a fountain pen . . .
I just got "Write Now" and am thinking about getting a fountain pen, so that's good to hear. I'm curious if you encountered any difficulties in your three-month transitional phase from chicken scratch to good handwriting. For example, I can see myself being in a situation where I need to take notes quickly two weeks into the project and reverting back to illegible scrawl out of necessity.
Yes, certainly, when quick writing I reverted at first. But speed comes with careful repetition. It will get faster and faster. Write Now will never be as fast as loopy methods like Palmer, but it can come close with practice. The Write Now approach is much much more legible.
Even within Getty Dubay you will have choices. Two stroke the "e" (I do), point the bottoms of "w" (I do), point the leading stroke of "m" and "n" (I do), cursive italic (yes). It's all beautifully explained in the book, and by the time you do cursive italic it will all make sense.
For instant gratification, Target sells a Pilot fountain pen for about $6. It's called a plumix or pluminix by Pilot. It's not a bad writer for you home, though goofy looking and clipless with a long barrel. Get a bottle of Noodler's Black (Bulletproof) and you can reload the cartridge with a pipette.
Office Depot carries some cheap fountain pens too including the cheap and amazing Yafa. Staples has disposable Pilot Varsities... and you can pull the nib out with a firm grip and refill them. The Staples Eco Friendly paper (sugar cane paper made in Egypt), is great practice paper.
Fountain Pen Network is the place to go to learn more. The B&B of the fountain pen world: http://www.fountainpennetwork.com .