Block D is a three-storey, brick and reinforced-concrete building with a low-profile hipped roof.
The building has rectangular massing and the elongated form comprises three distinct sections: full height facebrick enclosing concrete stairwells and amenities at the east and west ends; and first and second floor classrooms with north-facing verandahs to the centre.

The north elevation features vertical and horizontal concrete fins forming ten bays to each of the upper floors.
The verandahs are painted concrete and the end bays are enclosed with fixed, metal-framed glazing.
The south elevation features a continuous, flat reinforced-concrete hood over the lower windows.

The building retains much of its original timber-framed joinery.
Windows to the east-end section are hoppers with rendered projecting jambs, and the west-end section has mostly casement windows.
Classrooms have banks of south-facing hopper windows with fixed timber shelves to sill height.
Windows to the verandah walls are double-hung sashes with horizontal centre-pivot fanlights.
Some verandah windows on the second floor have been replaced with aluminium-framed sliders.
Classroom doors are low-waisted timber with glazed inserts.
Classrooms at the western end have sliding doors.

There are three (formerly four) classrooms on both the first and second floors.
The fixed classroom partitions have timber doors at the southern end.
Original folding partitions have been removed; however, the fixed partition bulkheads and doorways remain.
Walls and ceilings are lined with flat sheeting.

The west end section has lavatories to ground floor, and open meeting spaces (former cloak rooms) and toilets to the first and second floors.
The east end section has a glazed entrance lobby to ground floor, and a combination of offices, storage and toilets to the first and second floors.
The stairs in both end sections have metal balustrades with timber handrails.
A ramp at the eastern end of the first floor connects with the understorey of Block B to the east.

Much of the ground floor (formerly open play space supported by concrete piers) has been enclosed with fibrous-cement sheeting to form modern office spaces.
Open areas have been retained adjacent to the east and west stairwells.
These thoroughfares have fixed timber bench seats.
Block D is a three-storey, brick and reinforced-concrete building with a low-profile hipped roof. The building has rectangular massing and the elongated form comprises three distinct sections: full height facebrick enclosing concrete stairwells and amenities at the east and west ends; and first and second floor classrooms with north-facing verandahs to the centre.
The north elevation features vertical and horizontal concrete fins forming ten bays to each of the upper floors. The verandahs are painted concrete and the end bays are enclosed with fixed, metal-framed glazing. The south elevation features a continuous, flat reinforced-concrete hood over the lower windows.
The building retains much of its original timber-framed joinery. Windows to the east-end section are hoppers with rendered projecting jambs, and the west-end section has mostly casement windows. Classrooms have banks of south-facing hopper windows with fixed timber shelves to sill height. Windows to the verandah walls are double-hung sashes with horizontal centre-pivot fanlights. Some verandah windows on the second floor have been replaced with aluminium-framed sliders. Classroom doors are low-waisted timber with glazed inserts. Classrooms at the western end have sliding doors.
There are three (formerly four) classrooms on both the first and second floors. The fixed classroom partitions have timber doors at the southern end. Original folding partitions have been removed; however, the fixed partition bulkheads and doorways remain. Walls and ceilings are lined with flat sheeting.
The west end section has lavatories to ground floor, and open meeting spaces (former cloak rooms) and toilets to the first and second floors. The east end section has a glazed entrance lobby to ground floor, and a combination of offices, storage and toilets to the first and second floors. The stairs in both end sections have metal balustrades with timber handrails. A ramp at the eastern end of the first floor connects with the understorey of Block B to the east.
Much of the ground floor (formerly open play space supported by concrete piers) has been enclosed with fibrous-cement sheeting to form modern office spaces. Open areas have been retained adjacent to the east and west stairwells. These thoroughfares have fixed timber bench seats.
Moorooka State School