To properly appreciate this book, it becomes necessary to look at it in terms of what it has since inspired.
Ninja High School formulated the apex of the small press label Antarctic Press back in 1986. Along with a handful of other significant titles with origins in the company's earliest days(Mangazine, Tiger X, Mighty Tiny, et al), Ninja High School has proven to have the longest lasting appeal. Currently, AP has a number of popular titles (and has hosted a number of today's most acclaimed storylines, such as Alex Robinson's original comic book run of Box Office Poison). NHS lived through the black-and-white comics glut of the early-to-mid-1990s, and outlived even semi-legendary small press publisher Eclipse Comics (which had taken on the series for a time, presumably to increase the title's availability to increasing consumer demands).
Having seen a number of changes to its cast (inspiring a number of spin-offs and "alternate storylines" which do not mesh with current continuity), format (from black-and-white, to colour, to black-and-white again, to glossy full-colour, and an imminent return to its black-and-white roots), and supplemental additions to the series' title (the fan-created stories within AP's NHS Yearbook and The Girls of NHS serve as merely two examples of this phenomenon), Ninja High School has developed a complex matrix of characters, stories, and even compositions.
And it all started out with what was intended to be a three issue miniseries, spoofing popular Japanese cartoons and comics of the day. As such, Ninja High School has been the longest-running serial parody after Dave Sim's Cerebus.
As such, this book presents the earliest four issues of NHS, and therefore represents the most important sequence within the series' history. Any reader of Archie Comics (or any of the Harvey titles) can "jump on" at any point. With Ninja High School, it all stems back to these first few issues, without which the entire concept would prove somewhat difficult to grasp.
Considering this, it is somewhat disheartening to see that some changes were not made to the reprinting within this book. Indeed, they are taken exactly from the source material; misspellings, grammatical errors, accidentally omitted words and all. Arguably, such details add to the charm of the small-time book - although it is more likely to be said that they detract from the greater efforts involved in getting the book written, drawn, and published on a shoestring budget, considering how easily remedied they could have been.
The single biggest detracting consideration, however, is not the proto-stylism of artist/creator Ben Dunn's original artwork (just look at the earliest renderings of any given comic strip or animated character!), but the stumbling continuity issues which could have been corrected and/or explained. In Issue #1, the Ninja maiden Ichi-kun "Itchy-Koo" Ichinohei is completely taken aback when presented a photograph of the American boy she is slated to marry ("His name is Jeremy Feeple," says her grandfather), referring to him as "this homely brat!" Later, during their initial meeting, Itchy-Koo explains to the bewildered Jeremy that their connection was that their fathers "were once good friends in Japan." Yet, by Issue #4, Jeremy's mother reveals - by way of a non-sequitur anecdote/flashback - that Jeremy and Itchy-Koo were first acquainted during childhood, and that there is some manner of familial relation between them.
To expand upon this point, Jeremy's mother refers to her adoptive father as "Uncle" in Issue #4. The man in question was also, in fact, Jeremy's legal grandfather - so the use of "Uncle" confuses the relation between the family members. In light of hindsight, it is certain that such details were not plotted out for long-term continuity but were simply included for initial plot development - but should these not have been corrected to reflect what had become critical turning points for a long-running comics series?
In its defense, it can never be said that Ninja High School ever took itself too seriously (which contentiously became the case with Sim's mammoth Cerebus endeavor, having taken over much of his life throughout the years of its publication), and so the readers should not place too much importance on such details. This, however, is misplaced justification for an unfortunate mistake within the context of the larger body of work.
...Especially considering that Ben Dunn had the time to create a seven-page illustrated introduction to the graphic novel. Had some of this time been spent, instead, to remedying some of these details, the book would have proved stronger as a result.