'is involving' is a correct and usable phrase in written English. You can use it when referring to actions that require effort or participation from multiple parties. For example: "Writing a book is involving a lot of research and hard work."
Their story is involving and unexpectedly moving.
And he is involving the parents.
The main lesson we've learned is: involving your customers makes great business sense.
Stevenage, meanwhile, is involving local people in deciding how to spend community budgets.
You can understand why musicians would like this music: it is involving and rewarding to play.
Though Mr. Lawless's heavy hand is always apparent, the staging is involving and effective.
His is a first-person narrative, which is as often distancing as it is involving.
This is involving storytelling, but ultimately the film is undermined by its own tasteful restraint.
In the UK, the Orthodox United Synagogue is involving women in lay leadership.
Mr Noble is involving schools in the project to encourage interest in engineering as a career.
At times, the dynamic between Lucy and her parents -- teenagers themselves when she was born -- is involving.
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Ha Thuy Vy
MA of Applied Linguistic, Maquarie University, Australia