The phrase "also the highest number" is correct and usable in written English.
It can be used when you want to indicate that something is not only an additional item but also the maximum or greatest value in a particular context.
Example: "In the survey results, the average score was 75, but the response from the expert group was also the highest number at 95."
Alternatives: "additionally the maximum value" or "furthermore the greatest figure".
The number of delayed days in September was 196,246, also the highest number since monthly data was first collected in August 2010, and up one-third on a year ago.
It was also the highest number of police officers killed in one day since the Maoists began their rebellion over five years ago to try to topple the constitutional monarchy.
Some schools distinguished themselves within New York City, Mr. Packer said, noting that Stuyvesant High School had the highest number of A.P. test takers in the world, and also the highest number of students reaching the mastery level.
What is more, 40 percent of Americans — also the highest number since 1994 — agreed with the statement that "hard work and determination are no guarantee of success for most people".
That is also the highest number ever observed, in data going back to 1967.
The 34-year-old, who leaves with 14,676 international runs, broke the record for the fastest Test century during his final match and also the highest number of Test sixes with 107.
The high yield of jet-fuel over the PtMg 5.0 /HY can be attributed not only to the higher dispersion of Pt metal, but also the higher number of weak strength acid sites.
Also, the high number of surgeons with varying experience adds to the generalizability of the data.
Typical is also the high number of aromatic and aliphatic residues on the buried surface as well as the exclusion of charged residues, with a clear separation of hydrophobic core residues and polar rim residues.
Consideration should be given not only to the number of children referred needing a GA but also the high number of repeat GAs.
However, also the higher number of polymorphic markers in population B per se might contribute to higher accuracy of prediction [ 41].
